Ferrofluid Drop

A drop of ferrofluid is shaped by seven small circular magnets sitting beneath the glass and paper. Ferrofluids are made up of nanoscale ferromagnetic particles suspended in a carrier liquid. Under the influence of magnetic fields, they can take on fantastic shapes, including sharp-tipped droplets and labyrinthine mazes. This image is taken from the National Academy of Science’s book Convergence, focused on the intersection between science and art. (Photo credit: Felice Frankel)

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